Pressure attacment for lumber-matching machines.



No. 763,777. l PATENTED JUNE 28. 1904.

A. MILNE. Y

PRESSURE ATTACHMENT FOR LUMBER MATCHING MACHINES. APPLICATION FILED APR. a0. 1903.

NO MODEL.

INVENTOR flleri JiiZne WITNESS /MW0% arm A A TTORNEYS.

UNITED STATES Patented June 28, 1904.

PATENT OFFICE.

ALBERTMILNE, OF BURKS FALLS, CANADA.

PRESSURE ATTA Cl-lIVll INTYFOR LUMBhEFi-M ATCH ING IVVIACHINES.

SPECIFICATION forming part of Letters Patent No. 763,777, dated. June 28,1904.

Application filedAp ril 3i), 1903. Serial N- 154,98Z- (N0 model.)

To all whom zitmrry concern.- I

Beitknown that I, ALBERT MILNE, asubject of the King of Great Britain, and a resident description.

of Burks Falls, in the Province of Ontario and Dominion of Canada, have invented new and useful Improvements in Pressure Attachments for Lumber-Matching Machines, of which the following is a full, clear, and exact This invention relates to certain novel and useful improvements in attachments for himber-matching machines, and has particular application to pressure attachments for matching strips of lumber, such as flooring or, the

like. i

The principal object of my. invention is to provide a machine of this character which shall have the pressure-arm carrying the blocks thereof so mounted on the machine that they may be independently operatedthat is to say, if any uneven strip of material is being passed through the machine the blocks will at all times bear upon the under surface of the same in such manner that it will be held even to the machine, and thereby prevent any unevenness in the matching of the same.

Another object of the invention is to provide a machine which shall be exceedingly simple and durable in its construction, capable at all times of positive operation, and one which may be applied to any type or form of matching-machine and may be readily removed therefrom.

With these and other objects of a similar nature in view the invention consists in'th'e construction, combination, and arrangement of parts, as is described in this specification, delineated in the accompanying drawings, and set forth in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in both the figures.

Figure is a face view, partly in section on the line 1 1 in Fig. 2, of a device embodying my improvement; and Fig. 2 is a view in side elevation of the machine. 7

Referring now to the accompanying drawings in detail, A and B designate portions of the front of a matching-machine of any character. Extending transversely through the machineis a bar 1 of any material, preferably of steel, this bar being adapted to have the weight of the levers 2 2 bear upon the same,

each of said levers having at the end'thereof a suitable Weight 3. To the sides of the pressure-frame are secured the relatively short extensions or straps 4, said straps'being made "of iron or other suitable material and having formed near their outer-ends a slot 5, in which slot is adapted toplaya pin 6, secured to an arm 7, which arm in turn is connected, through the medium of a suitable bolt or pin 8, to the lever 2. also two vertically-extending arms, as will be There are two of these straps and clearly seen in Fig. 1. To the upper end of the arms 7 7, which arms are formed, preferably, of steel, I secure the relatively widepressure blocks 9 9, such blocks being adapted when the arms are moved upwardly by the weighted levers to contactfwith a piece of stock or flooring, which is shown at C, and

press the end of the flooring into contact with the standards or feet 1O 10 of the machine, which feet are capable of adjustment through the medium of the set-screw 11, mounted in as is clearly shown in Fig. 1, and if one edge of the board should happen to be thinner or more irregular than the other edge the weight at the end of the lever of the pressure-arm will cause the pressure-block to be brought into contact with the thinner edge and held against the pressure-foot with a steady even pressure, thereby causing even matching of the board. When there is no stock or work in the machine, the weights rest upon the iron bars, as at 11 11, which are arranged across the front of the frame of the machine.

As the strips of lumber vary in thickness, the levers may be pressed down orup to accommodate the pressure-blocks, such varying thickness always, however, keeping the stock in contact with the pressure-feet.

While I have shown and herein described one particular embodiment of my invention,

I wish it of course to be understood that I do not limit myself to the precise details of the construction herein illustrated, as there may be modifications and variations in some respects without departing from the essential features of the invention or sacrificing any of the advantages thereof.

Having thus described my invention, I claim as new and desire to secure byLetters Patent 1. The combination with a lumber-matching machine, of a plurality of pressure-feet carried by said machine and designed to bear down upon stock passing through the machine, a set-screw engaging with each of said feet, for adjusting the latter vertically, and a pressure attachment comprising independentlyoperated weighted pressure-blocks having verticalguided movement and designed to bear upward against the stock, the pressure devices being adjacent to the matcher-heads, substantially as set forth.

2. The combination with a lumber-matching machine, of vertically -adjustable pressurefeet designed to be mounted above and bear down upon stock passing through the machine, a plurality of pressure devices, each including a vertical arm, a relatively wide pressure-block secured to the upper end of the arm, the arm and pressure-block having vertical-guided movement, a lever connected with the arm for moving the pressure-block upward against the stock, a transverse su pporting-bar for the levers, and a weight on each lever for moving the pressure devices independently of each other, the pressure devices being arranged adjacent to the matcher-heads, substantially as set forth.

3. The combination with a lumber-matching machine, of a vertically-adjustable pressurefoot designed to bear down upon stock passing through the machine, a plurality of vertically-movable arms, pressure-blocks carried by said arms at the upper end thereof, the pressure-foot and pressure-blocks being adjacent to the matcher-heads, fixed brackets or straps each having a vertical slot near its outer end, pins secured to the lower ends of said arms and having movement in the said slots, levers connected with the said arms above the said pins, a transverse bar located adjacent to the pivoted ends of the levers, and on which the said levers bear and a weight at the end of each of said levers for independently actuating each of the said arms to hold the pressure-blocks in contact with the under side of the stock or work passing through the machine, as set forth.

4. The combination with a lumber-matching machine, of vertically adjustable pressurefeet adapted to bear downward upon stock passing through the machine, a series of vertically-movable arms, pressure-blocks carried by said arms, the pressure-feet and pressure-blocks being arranged adjacent to the matcher-heads, levers also connected with the arms, and weights carried by said levers, the construction being such that the arms with their pressure-blocks are independently movable, substantially as set forth.

5. The combination with a lumber-matching machine, and a bar extending transversely thereof, of a plurality of adjustable pressurefeet adapted to bear downward upon stock passing through the machine, slotted brackets or straps secured to the frame of the machine, arms carrying projections or pins movable in said slots, said arms extending vertically of the machine, pressure-blocks carried by said arms and adapted to be moved in the path of stock traveling through the machine, the pressure-feet and pressure-blocks being adjacent to the matchenheads, a lever connected to each arm, a weight for each lever, and a support for the weights when the machine is in its inoperative position, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALBERT MILNE.

Witnesses:

CHARLES WALTER SHARPE, RODERICK J. MGDOGALL. 

